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The life cycle is direct, with a prepatent period of 30–56 days. Eggs hatch on the ground and develop into infective larvae in several weeks. Larvae penetrate through the skin or are ingested and then migrate to the respiratory system, are coughed up and swallowed and finally reach the small
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in lambs. The worms are stout and measure 1–3 centimetres (0.4–1.2 in) in length. Young animals are most commonly affected and only several hundred worms are necessary to cause morbidity. Adults often carry worms without showing clinical signs.
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often occur. Skin involvement due to larvae penetration appears as lesions especially on the feet and limbs. Analysis of faecal samples enables eggs to be found, or adults are visualised in the small intestine at
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is the primary sign, along with systemic signs of anorexia, lethargy and weight loss if the worm burden is severe.
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treatment may help prevent the disease, as well as pasture management to avoid egg and larvae accumulation.
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541:roundworm-related article is a
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208:. Important species include:
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484:–related article is a
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102:Scientific classification
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32:This article includes a
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61:more precise citations.
258:Treatment and control
385:Fauna Europaea (new)
291:accessed 09/10/2011.
482:veterinary medicine
16:Genus of roundworms
214:B. trigonocephalum
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607:Rhabditida genera
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592:Strongylida
247:dehydration
149:Chromadorea
59:introducing
586:Categories
539:Rhabditida
338:Bunostomum
309:Bunostomum
284:Bunostomum
277:References
221:Life cycle
197:Bunostomum
180:Bunostomum
159:Rhabditida
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67:April 2022
235:Diarrhoea
202:ruminants
125:Kingdom:
119:Eukaryota
324:Q3719474
318:Wikidata
252:necropsy
206:camelids
186:Railliet
165:Family:
139:Nematoda
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243:anaemia
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436:NZOR:
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364:1BUNOG
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188:, 1902
537:This
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411:IRMNG
40:, or
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424:NCBI
398:GBIF
359:EPPO
346:BOLD
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